Siegfried Spiess Motorenbau GmbH
Dieselstrasse 11    D - 71254 Ditzingen
Phone +49 ( 71 56 ) 95 61 - 0
Fax +49 ( 71 56 ) 95 61 - 11
Email info@spiess-gruppe.de

ATS Formula 3 Cup

Across-the-board success

Following the perfect debut into the 2007 season, it seems appropriate to talk about an across-the-board success, with two Formula 3 ATS Cup race weekends being contested. And this does not only apply to the prospering series that has got an own TV magazine on German TV station premiere alone but also to a new engine concept that is celebrating a stunning streak of success.

The OPC Challenge Engine designed and produced by 'Spiess Motorenbau GmbH' succeeded in convincing both in the season kick-off at Hockenheim and the second race weekend, held at Oschersleben. After all, all the four race wins and pole positions were secured with the OPC Challenge Engine, with all the four fastest race laps also having been set by drivers relying on the new power unit.

When it came to designing the OPC Challenge based of the extremely successful Opel Formula 3 engine, cost reduction was the main goal. The requirement: 'One engine for the entire season.' To realise this goal, Spiess reinforced the aggregate in several areas and designed it for long maintenance intervals. At the same time, a slight extension of the air restrictor to 27 millimetres helps to compensate for the loss of power. At the end of the day, the first four rounds of the season proved that all the goal set were realised in an extremely successful way.


© S. Spiess Motorenbau GmbH, 2012
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Construction Design of completely new engines or the enhancement of existing power units –inventive spirit, courage, extensive team work and our huge wealth of represent the basis for innovative results.
Manufacturing Precision components or the refinement of existing components, single copy or small-batch series, solid material or cast material – a diversified service range thanks to an ambitious mix of know-how and new developments.
Quality management Out there on the racetrack, the smallest mistake can be crucial. Therefore, special emphasis is placed to a gapless and absolutely precise quality control. No part will be installed without having been subjected to an extremely strict examination.
Engine manufacturing The engines are individual custom products and are assembled in the heart of the company by a highly qualified team. Here, quality instead of quantity represents the yardstick.
Test bench Here, the process represented by development and design, production and manufacturing comes full circle. On the test rigs, the components or the entire project have to definitively demonstrate if they meet the highest standards.